Changing a mouse only because a LED is annoying you is a bit excessive, and while CM Storm products aren't top of the line, they're still nice pieces of hardware for what they cost (got myself a Sirus headset and it's pretty nice, after fiddling a bit with the audio control panel).
EDIT:
I'd say get a good budget headset, as others have promptly suggested, unless your system needs a specific upgrade.
Regarding leds:
Most motherboards have a BIOS setting for that. It's usually found under power management or energy saving settings, sometimes called "EUP". Disable it and everything connected to a USB port won't receive power anymore when the PC is off.
Mind you tho, I said "Most"; I've had a couple of them which didn't allow disabling it for some reason. In such cases, it's mostly the fault of a software application that comes with the hardware (e.g. Gigabyte's SuperCharge utility, A.K.A. "On/Off charge").
If all else fails, you can always cover the mouse with a black, opaque piece of cloth when you're going to bed.
They're not bad peripherals, although there's definetly better; it's a waste to spend 50$ on new stuff when the one you have works and can satisfy your needs.